feet within the building. >> reporter: the lieutenant with the twin cities san anselmo police department says since then, there have been a lot of changes to prevent another disaster. >> we have cleaned out the storm drains. we've cleaned out the creeks. we've sent media alerts -- or excuse me, email alerts to the merchants. about three-quarters of the merchants have floodgates now. >> reporter: the town has also approved spending $20,000 to install a floodwater detention basin at memorial park. a series of powerful storms is expected to hit bay area over the next few days into the weekend. we're talking up to 8" of rain in some places, high winds, possible flooding and power outages. while the biggest part of the storm won't be here until thursday, people are getting prepared filling sandbags to protect their homes and businesses. >> i live right on the creek. so it's always a little concern. >> we have a whole bunch of puddles on the roof. we have to put drains up there to make sure it doesn't leak into the buildings or anything like that. sometimes it floods on the gutters